英语文法:谓语动词后不定式的作用

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英语文法: 谓语动词后不定式的作用
Source: Zhihu
(prepared by: alexcwlin; edited by: Adam Lam)
Question:
谓语动词加不定式结构中,不定式做什么句子成分?
比如want to do...
alexcwlin comments:
The short answer to your question is the Infinitive usually can
either be:
1.
2.
In the case which you give “I want to do”, “want” can only be a
Transitive Verb (check your dictionary to confirm).
A Transitive Verb most often needs an Object (which is usually a
Noun or Nominal). Therefore “to do” is a Nominal, Object of the
Transitive Verb “want”
In the case of a Linking Verb, such as “The aim is to help others”, the Infinitive Phrase “to help others” can be either a Nominal Subject Complement or an Adjectival Subject Complement.
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